Physics - Kinematics Question with Solution | TestHub

A car leaves city A for B during first half of time it travelled at $40\mathrm{km}/\mathrm{hr}$, for half of remaining distance he travelled at $60\mathrm{km}/\mathrm{hr}$ and for remaining journey, he travelled at $80\mathrm{km}/\mathrm{hr}$. What is average speed of car (in $\mathrm{km}/\mathrm{hr}$ ) for entire journey.